First, please understand that we intend no offense in the wording of this question. We genuinely receive questions, from Catholics, along the lines of “What is the difference between Catholics and Christians?” In face-to-face conversations with Catholics, we have literally heard, “I am not a Christian, I am Catholic.” To many Catholics, the terms “Christian” and “Protestant” are synonymous. With all that said, the intent of this article is that Catholics would study what the Bible says about being a Christian and would perhaps consider that the Catholic faith is not the best representation of what the Bible describes. As a background, please read our article on “What is a Christian?”
A key distinction between Catholics and Christians is the view of the Bible. Catholics view the Bible as having equal authority with the Church and tradition. Christians view the Bible as the supreme authority for faith and practice. The question is, how does the Bible present itself? Second Timothy 3:16-17 tells us, “All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the man of God may be thoroughly equipped for every good work.” This text tells us that Scripture is not “just the beginning,” or “just the basics,” or the “foundation for a more complete church tradition.” On the contrary, Scripture is perfectly and fully sufficient for everything in the Christian life. Scripture can teach us, rebuke us, correct us, train us, and equip us. “Bible Christians” do not deny the value of church tradition. Rather, Christians uphold that for a church tradition to be valid, it must be based on the clear teaching of Scripture and must be in full agreement with Scripture. Catholic friend, study the Word of God for yourself. In God’s Word you will find God’s description of, and intention for, His Church. Second Timothy 2:15 declares, “Do your best to present yourself to God as one approved, a workman who does not need to be ashamed and who correctly handles the word of truth.”
Read more: http://www.gotquestions.org/Catholic-Christian.html